Tillmann Robert Neu
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View article: Production of Metallic Foam Precursors Using Current‐Activated Pressure‐Assisted Densification
Production of Metallic Foam Precursors Using Current‐Activated Pressure‐Assisted Densification Open
The production of metallic foams is influenced by many aspects. Among other factors, compaction plays an important role in the powder metallurgical production of foamable precursors. A powder compaction metallurgical method, known as curre…
View article: Development of Aluminum Scandium Alloys for Hydrogen Storage Valves
Development of Aluminum Scandium Alloys for Hydrogen Storage Valves Open
For the development of aluminum scandium alloys to produce a hydrogen storage valves, various aluminum alloy series with different Sc and Zr contents are tested. The alloys are mainly characterized by hardness measurements and tensile test…
View article: Morphological Evolution of Sn‐Metal‐Based Anodes for Lithium‐Ion Batteries Using Operando X‐Ray Imaging
Morphological Evolution of Sn‐Metal‐Based Anodes for Lithium‐Ion Batteries Using Operando X‐Ray Imaging Open
Sn‐based electrodes are promising candidates for next‐generation lithium‐ion batteries. However, it suffers from deleterious micro‐structural deformation as it undergoes drastic volume changes upon lithium insertion and extraction. Progres…
View article: Operando X‐Ray Tomoscopy of Laser Beam Welding
Operando X‐Ray Tomoscopy of Laser Beam Welding Open
The phenomena occurring in a weld seam during advancement of a laser beam over a metallic component are still under dispute. The occurrence and evolution of porosity and the occasional blowout of melt need to be understood. Here, a recentl…
View article: Convolutional Neural Network‐Based Regression Model for Distribution Data from X‐Ray Radiographs of Metallic Foams
Convolutional Neural Network‐Based Regression Model for Distribution Data from X‐Ray Radiographs of Metallic Foams Open
The difficult determination of morphological properties in metal foams stands behind the reasons why metal foams are not widely used in industry, since quality control of the batches produced is limited to destructive methods. To approach …
View article: Aluminum Foam Sandwiches: A Lighter Future for Car Bodies
Aluminum Foam Sandwiches: A Lighter Future for Car Bodies Open
An aluminum foam sandwich (AFS) is a lightweight material that has great potential for applications in the automotive industry. In this work, the production routes of metal foams and metal foam sandwiches are reviewed. We compare the mecha…
View article: Development towards high-resolution kHz-speed rotation-free volumetric imaging
Development towards high-resolution kHz-speed rotation-free volumetric imaging Open
X-ray multi-projection imaging (XMPI) has the potential to provide rotation-free 3D movies of optically opaque samples. The absence of rotation enables superior imaging speed and preserves fragile sample dynamics by avoiding the centrifuga…
View article: Development towards high-resolution kHz-speed rotation-free volumetric imaging
Development towards high-resolution kHz-speed rotation-free volumetric imaging Open
X-ray multi-projection imaging (XMPI) provides rotation-free 3D movies of optically opaque samples. The absence of rotation enables superior imaging speed and preserves fragile sample dynamics by avoiding the shear forces introduced by con…
View article: X‐Ray Tomoscopy Reveals the Dynamics of Ice Templating
X‐Ray Tomoscopy Reveals the Dynamics of Ice Templating Open
Little experimentally explored and understood are the complex dynamics of microstructure formation by ice‐templating when aqueous solutions or slurries are directionally solidified (freeze cast) into cellular solids. With synchrotron‐based…
View article: X‐ray Tomography and Tomoscopy on Metals: A Review
X‐ray Tomography and Tomoscopy on Metals: A Review Open
X‐ray tomography is a versatile tool in materials research and engineering since it allows for a non‐destructive and three‐dimensional mapping of the constituents of a heterogeneous material as long as they differ in their interactions wit…
View article: Tomoscopy: Time‐Resolved Tomography for Dynamic Processes in Materials
Tomoscopy: Time‐Resolved Tomography for Dynamic Processes in Materials Open
The structure and constitution of opaque materials can be studied with X‐ray imaging methods such as 3D tomography. To observe the dynamic evolution of their structure and the distribution of constituents, for example, during processing, h…
View article: <i>In situ</i> observation with x-ray for tentative exploration of laser beam welding processes for aluminum-based alloys
<i>In situ</i> observation with x-ray for tentative exploration of laser beam welding processes for aluminum-based alloys Open
In recent years, laser processes have taken an ever-increasing market share in the manufacture of components. The development of new, improved beam sources with corresponding systems technology and the decreasing investment costs of the be…
View article: The Influence of Alloy Composition and Liquid Phase on Foaming of Al–Si–Mg Alloys
The Influence of Alloy Composition and Liquid Phase on Foaming of Al–Si–Mg Alloys Open
The foaming behaviour of aluminium alloys processed by the powder compaction technique depends crucially on the exact alloy composition. The AlSi8Mg4 alloy has been in use for a decade now, and it has been claimed that this composition lie…
View article: Influence of the Heating Rate on the Foaming Behavior of Various Aluminium Alloys
Influence of the Heating Rate on the Foaming Behavior of Various Aluminium Alloys Open
Powders of metallurgically prepared precursors expand to a foam differently depending on how fast they are heated to their foaming temperature. The foaming behavior of four alloys was studied with heating rates varying from 0.1 K/s to 18 K…